The distribution of heights (in cm) of 96 children is given below. Construct a histogram and a frequency polygon on the same axes. Height (in cm):, 124-128, 128-132, 132-136, 136-140, 140-144, 144-148, 148-152, 152-156, 156-160, 160-164 No. of Children, 5, 8, 17, 24, 16, 12, 6, 4, 3, 1

The following observations relate to the height of a group of persons. Draw the two types of cumulative frequency polygons and cumulative frequency curves and determine the median. Height in cms Frequency 140-143 143-146 146-149 149-152 152-155 155-158 158-161 161-164 164-167 167-170 170-173 173-176 176-179 179-182 3 9 26 31 45 64 78 85 96 72 60 43 20 6

Given below is the frequency distribution of the heights of 50 students of a class: Class Interval:, 140-145, 145-150, 150-155, 155-160, 160-165 Frequency:, 8, 12, 18, 10, 5 Draw a histogram representing the above data.

Find the mean height of 65 boys from the following data : {:("Height (in cm)",142,144,146,148,150,152),("Number of boys",10,13,12,7,17,6):}

Given below are the heights (in cm) of 11 boys of a class : 149, 142, 154, 146, 143, 152, 148, 132, 140, 139, 128 Arrange the above data in an ascending order and find

The heights (in cm) of 35 students of a class are given below : {:("Height (in cm)",157,152,153,154,155,156),("Number of students",7,4,3,5,9,7):} Find the median height.

Construct a frequency distribution table for the following data, taking class-intervals 4-6, 6-8 , ............. 14-16 . 11.5, 6.3, 7.8, 9.2, 10.5, 4.5, 6, 8.3, 12.5, 15.8, 7.4, 5.3, 8.4, 15.2, 8.9, 9.8, 8.25, 6.5, 5.8, 10.5, 14.2, 15.3, 11.7, 9.9, 8.8, 6.6, 4.3, 4.7, 9.4, 10.1, 15.5, 14.4, 12.2, 7.7, 5.5 .

The heights (in cm) of 30 students of class VIII are given below: 155,158,154,158,160,148,149,150,153,159,161,148,157, 153,157,162,159,151,154,156,152,156,160,152,147,155,163,155, 157,153 Prepare a frequency distribution table with 160-164 as one of the class intervals.

The marks obtained by 40 students of class IX in an examination are given below: 18, 8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13, 21, 13, 15, 20, 24, 1, 7, 21, 16, 13, 18, 23, 7, 3, 18, 17, 16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included)

The following table shows the heights of 50 students of a class : {:("Height (in cm)",152,148,150,153,149,151,147),("Number of students",8,3,4,7,12,10,6):} Find the mean and the median. Using empirical formula, calculate its mode.

The following data give the distribution of heights of students : {:(underset(("in cm"))"Height",160,150,152,161,156,154,155),(underset("students")"Numbers of ",12,8,4,4,3,3,7):} The median of the distribution is